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Superior to a carboy, Big Mouth Bubbler® Plastic prevents off-flavors by enabling you to keep the lid on during testing and transfer, avoiding exposure to oxygen with standard-sized ports that can accommodate most fermentation-monitoring equipment.

The punted bottom promotes crystal-clear beer by efficiently settling out yeast from finished fermentations. Graduation marks make volume measurement instant and effortless. And, of course, its revolutionary wide mouth eliminates the nightmare of cleaning and sanitizing by giving you direct hands-on access to attack crusted krausen, while simultaneously offering unlimited flexibility in dry-hopping and flavor additions.

*The new Big Mouth Universal Lid (included) fits all Big Mouth Bubbler® Fermentors. The Big Mouth Bubbler® Universal Lid is just like a traditional carboy bung, only bigger! Just as easy to sanitize and set in place too. Ribbed silicone rings ensure a positive seal to keep out pests, while the non-threaded design allows the lid to move preventing an out-of-control fermentation from dangerously pressurizing your fermentor.

Important Note: Do not fill any Plastic Big Mouth Bubbler® fermenters with very hot liquid - temp should not exceed 140 degrees Farenheit (60 celcius)

BIG MOUTH BUBBLER® Product Specifications:

Capacity:

5 gallon

6.5 gallon

SKU:

U41950

U41965

Weight:

3.4

4

Height (w/lid, closed):

22"

23"

Diameter:

10"

11"

Mouth:

5.5"

5.5"

Fermentor Material:

PET

PET

Note: We recommend a soft cloth for cleaning the inside. Standard carboy brushes will scratch plastic fermenters leaving places for grime to hide. A warm cleaning solution will suffice. Do not use hot water on plastic fermenters of any sort. The Big Mouth Bubbler® is compatible with a standard carboy dryer when the dryer is used inverted.

*Pro Tip: Save your box and use it as a cover for your fermenter!

6.5 Gallon fermenters are perfect for the primary stage of beer or wine fermentation. The extra head space allows for the production of krausen on a 5 gallon batch of beer. Also available as a 5-gallon secondary fermentor.

The first time I bought these, they had the screw top lids, which worked perfectly for 2F. I reordered, not thinking to check, and all my new ones came with the universal lids. I've had the universal lids in the past and they are a f***ing nightmare. I don't know why they don't at least offer the option of the old lids. Looks like the ported lids are available, but not the piece that screws them on. I am SO peeved I have to deal with these lids again. Please consider reinstating the old ones as an option. I feel like I just wasted $120.

bought bubbler to start an australian shiraz and it has worked great so far. instructions said to stir in 3 days, I removed the air lock and stirred away!!! it was so easy and did not have to remove the lid. works real good for me. I plan on replacing some of my heavy glass carboys with these. Thanx NB for a great product.

This is definitely THE best fermenter I've used, from glass, to bucket to other plastic bottle types. Easy to clean and add ingredients after the initial fill like fruit, more water or yeast/yeast nutrient, when warranted. Really easy to scoop out tester samples too, which come to think about it.... I may need to deduct points for that because it's counter productive....: )

These fermenters are a great solution to wort storage during fermentation. The main thing is the wide mouth allows thorough cleaning between batches. I also like that I get a good view of the wort so I can see if fermentation is active. The main fault is lack of seal around top, which I get around by putting Seran wrap over top, slitting an X for cork in middle, then putting top and screw lid on. This seems to seal whatever gaps are between threads or top and neck of fermenter.

I got one of these because I was scared of carrying my heavy glass carboys up and down stairs for cleaning/storage. The Big Mouth Bubbler is very lightweight and won't break like a carboy can. Cleaning is incredibly simple - I can get my whole arm in to quickly scrub any remaining trub/gunk. Highly recommended - I've just put another of these on my shipping list!

Given the mixed reviews that the Big Mouth Bubbler has gotten, I thought I'd get several experiences with it before reviewing it. Now I've got at least 6 brews that I've fermented in the BMB. I am very pleased. It seals well, provides me the opportunity to watch the action, and cleans up easily enough. What's not to like? I will watch for an opportunity to snag another one.

I've had this for nearly a year now, and it's worked fantastic. I have used buckets and glass carboys, but this beats them hands down. Very lightweight yet sturdy enough. Easy to clean with the wide mouth. Clear so you can watch the action. The available dual-port lid makes sampling or dry-hopping easy, and the fact that the lid screws on makes it much simpler to open or close than the pry-off lids of my brew buckets. It also doesn't seem to retain hop smell like buckets. I've gotten to the point that it's my go-to fermentor. Glass has its place -- such as long-term sour fermentations -- but otherwise I think I'm transitioning to these.

Works great. Just finished 5 gallons at 1.078 OG in 6.5 gallon plastic big mouth bubbler. Used a 1/2in blow off tube into a jar of sanitizer and the blowoff made a mess on the bottom of the refrigerator. No sign of anything on the lid or the bung so I know this is airtight. No more brushing the inside of a carboy and soaking overnight!

The big mouth bubbler has such a great capacity and is so easy to clean. I used a blowoff setup for my double IPA which had a very active primary fermentation. I don't think I could've made that beer without this carboy!

Easy to clean, easy to fill, easy to clean. I had no issues with the stopper not wanting to stay seated. I would suggest though that you get the dual port lid and the gasket kit. I like this WAY better than the white buckets because you can watch the action. I'll be getting 2 or 3 more of these.

From someone that brews in the garage and has to haul their wort to the basement to ferment, glass is a bit sketchy to me. Buckets work fine, but I really like the BMB thus far. Cleaning is a breeze, dry hopping and racking will be a breeze. I have a 1.101 Imperial Stout in the BMB now and it's doing great. I am one of the geeks that likes to see the fermentation progress, so this gets 2 thumbs up.

Easy to clean, very tough material. Makes those carboys a thing of the past. You may have to take ultra-fine sandpaper to the rim to get a perfect seal with the standard lid, but the universal lid works like a charm ... it's ribbed and provides an excellent seal. I don't use the standard lid anymore. Buy it at Northern Brewer for guaranteed satisfaction.

I got one for Xmas and was just able to complete a batch with it. Hands down, I will only buy these from now on. No need for a long review...it is what it is....you can reach every part of the inner surface so you KNOW that you are getting it cleaned. It is feather light and sturdy. Buy this if you hate washing carboys.

I have a couple of these now and have had zero issues with them. They seal good, transport good, and are easy to clean. I also got the double holed lid, which is great for dipping your wine thief through without having to take off the lid. I've used glass carboys, glass big mouths, and buckets, and this is by far my favorite.

i have started making mead and found that I was running out of fermenters to age my mead. Saw this and wanted to give it a try. I got both the 6 1/2 and 5 gallon sizes. I have made a few batches in them and so far I'm happy. The best part is the easy access for adding ingredients, taking gravity readings and for cleaning. There was never a problem getting a good seal around the lid. Sometimes the lid wants to cross thread when screwing it on. If this happens, don't try to force it.

Brewed with the plastic big mouth 6.5 gal fermentor and so far so good. Only design critique about the design, its a little taller than the glass version. Reaching in to wash the bottle is difficult for those with short arms. Otherwise, seems like a solid investment and can’t wait to brew with it again.

I just bottled my first batch fermented in the 6.5 gallon plastic big mouth bubbler. I love this carboy. Here are some of the things I like about it: - its large enough to get a full 5+ gallon yield even when using a large amount of hopstand and dry hops. - the dimple in the bottom center is perfect for resting the auto-siphon on to raise it above the trub, preventing most yeast and hop debris from getting into the bottling bucket - the two-port lid is great for inserting a long-stem thermometer (or thermowell) for monitoring the wort temperature during the initial stage of fermentation. I drilled a stopper and keep the thermometer in the wort for the duration of fermentation. Second port is also useful for easily taking gravity samples. - even with 6+ gallons of wort in it, its pretty easy to pick up and carry. - great for top cropping yeast during fermentation or harvesting yeast after fermentationI wouldn't hesitate to get another one of these if I needed more carboys.

I just received my Plastic Big Mouth jar today and it looks great! I think they have done a great job. Sturdy and well made. I already have two batches brewing in buckets now so when I' get a chance to use this fermentor I'll do a report. Buckets will be gone after this fermentor. For those of you who who would like to save some money on buying the carrying strap, just do like I do. Get one of those plastic milk cartons that they deliver the milk in to the grocery store that hold like 4 gallons of milk. They work great. I use that now for the plastic fermenting buckets they have a lot of room for your fermentor. It makes it so easy to carry around a full bucket of wort . Try it out.

I was looking for new fermenters switching from buckets. None of the carboys I looked at had a small enough diameter to fit two in my small refrigerator but these bubblers fit inside buckets so they are perfect for my small space. Plus they are Easier to clean then conventional carboys.

I've used mine as a secondary so far. Till Im ready to ditch the carboy anyway. Love it for dry hopping or adding adjuncts in secondary. Easy to clean. I want another one. Maybe after my fermenter box is finished.

Just bottled a brown ale after fermenting in my 6.5 gal BMB. Yeast settled nicely at the bottom during cold crash. Beer racked off perfectly leaving the yeast and traub behind. I had this cleaned beautifully in 15 minutes once it was empty. The carry handle is great - totally worth the extra bucks.I just ordered a 5.0 gal BBM for secondary with the double ported lid. These will be replacing my Better Bottles and will be the only thing I purchase going forward.HIGHLY recommend!

Good, solid option for those of us that like to be able to see the fermentation churning and to be able to remove tertiary flavor components easily. Only used for one batch so far, but it is easier to manage than the traditional glass.

Update on my last review. I just completed fermenting my Private Rye in my new 6.5 Big Mouth. I only do single stage 24 days. Nice to get the beer out with my auto siphon with no sediment because of the design of the bottom of the Big Mouth. Cleaning was a snap. After 24 days the hose took off 90% of the crud. Soaking with PBW for 20 minutes it was spotless. Rinse and let dry. The easiest I ever did. This is a great product. Very light pass with a soft sponge so no worry of scratching. I will be ordering another one so I can do two batches at once. Thanks for a great product!

We were a little weary about trying these out since people kept saying they didn't make a great seal but we haven't had any issues. The three batches that we have fermented have had good bubbling action through the airlock and haven't noticed any leaks.

When the glass big mouth bubbler came out, I wished they would come out with a plastic equivalent. I ditched my glass carboys last year and switched to plastic carboys for safety and weight reasons. My wish was finally granted and I ordered one immediately. The benefits are obvious: easier to clean and easier to dry hop using a hop bag (and still be able to get the bag out after the hops have swollen up). The plastic seemed a little thin at first, but it felt solid after I filled it with 5 gallons of wort. The lid sealed well and the dual ported will come in handy once I get my thermowell. In addition, the price is hard to beat when compared to the glass version. The only warning is that this fermenter is taller than other plastic ferementers. This did not prove to be a problem with my coolbrewing bag. I like it so much, I just ordered a second one.

Ordered the Big Mouth Bubbler to get a second batch started while the first was in the bucket that came with my kit. I like the fact that the Big Mouth allows you to see exactly whats going on not to mention the ease of cleaning and sanitizing. I had absolutely no problems with getting it to seal as others have reported. I think I’ll be buying another for secondary fermentation in the near future!

BEST ANSWER:Temperatures over 140 F will damage these plastic fermenters, so care must be taken when cleaning them or using them. We do not recommend pouring hot wort into them in any situation. - Mike W, Northern Brewer

BEST ANSWER:Temperatures over 140 F will damage these plastic fermenters, so care must be taken when cleaning them or using them. We do not recommend pouring hot wort into them in any situation. - Mike W, Northern Brewer

Does this come with the universal lid or the standard lid? Also, are people having issues with universal lid popping off on the plastic big mouths like people have observed happening in the glass versions?

BEST ANSWER:No gasket - I've personally never had an issue with there being no bubbles. My question would be if you checked the seal before putting any wort in? I did this by putting the lid on tight, putting my blowoff hose in and trying to suck air in...I was not successful! That told me certainly enough that it had a good seal. Hope this helps.

BEST ANSWER:No gasket - I've personally never had an issue with there being no bubbles. My question would be if you checked the seal before putting any wort in? I did this by putting the lid on tight, putting my blowoff hose in and trying to suck air in...I was not successful! That told me certainly enough that it had a good seal. Hope this helps.

BEST ANSWER:If the lid starts popping off during the active parts of fermentation, you can just place a weight on the lid. If it pops up slightly, but the gasket is still making contact with the sides, the fermentor should still stay sealed.

BEST ANSWER:If the lid starts popping off during the active parts of fermentation, you can just place a weight on the lid. If it pops up slightly, but the gasket is still making contact with the sides, the fermentor should still stay sealed.

BEST ANSWER:The main reason to use glass for secondary is that plastic vessels don't always seal quite as well as glass, and oxygen can leak in and cause staling. Of course this isn't a problem during primary fermentation, but if you're going to do a secondary, especially a long one, glass is still usually better. Using plastic raises the risk a little, but it doesn't necessarily ruin it. That said, I've used plastic for a secondary before, and I've never experienced anything negative myself.

BEST ANSWER:The main reason to use glass for secondary is that plastic vessels don't always seal quite as well as glass, and oxygen can leak in and cause staling. Of course this isn't a problem during primary fermentation, but if you're going to do a secondary, especially a long one, glass is still usually better. Using plastic raises the risk a little, but it doesn't necessarily ruin it. That said, I've used plastic for a secondary before, and I've never experienced anything negative myself.

I have the big mouth bubbler with the dual port lid and a blow off tube. I really like the whole system but I have not used the blow off tube yet because it does not give a snug fit into the dual port lid. What is the trick to get a good fit, I just don't feel comfortable with the way it fits now.

BEST ANSWER:Thanks for contacting us. Tricks include having the right angle for the tube so that it is pulled by the free end to make a seal at an angle- that is how most common set ups allow for it to seal. You can also try using some teflon tape of some sort to help get it snug. The tubing will vary based on kinks temperatures and many factors. You can try putting one end in hot water and then stretching the tubing over the lid port to stretch it and then it may fit more snugly inside the tube. Since it is there to allow yeas to leave as needed and fermentation is pushing everything away nothing can get in anyway and the tubing just prevents big messes and makes cleaning up easier.

BEST ANSWER:Thanks for contacting us. Tricks include having the right angle for the tube so that it is pulled by the free end to make a seal at an angle- that is how most common set ups allow for it to seal. You can also try using some teflon tape of some sort to help get it snug. The tubing will vary based on kinks temperatures and many factors. You can try putting one end in hot water and then stretching the tubing over the lid port to stretch it and then it may fit more snugly inside the tube. Since it is there to allow yeas to leave as needed and fermentation is pushing everything away nothing can get in anyway and the tubing just prevents big messes and makes cleaning up easier.